大豆胞囊线虫3号生理小种是东北大豆产区分布最广、危害最大的生理小种,五寨黑豆对包括大豆胞囊线虫3号生理小种在内的7个生理小种具有高抗性。以黑龙江省主栽品种合丰35为母本,与五寨黑豆进行杂交,通过鉴定F_2、F_3代对大豆胞囊线虫3号生理小种的抗性,研究了五寨黑豆对大豆胞囊线虫抗性遗传。结果表明:在以合丰35为遗传背景下,五寨黑豆对SCN 3号生理小种的抗、感分离比例符合孟德尔遗传规律中1∶3的分离比例,表明五寨黑豆对SCN 3号生理小种的抗性是由1对隐性基因控制。 Soybean cyst nematode No.3 physiological races are the most widely distributed and harmful physiological races in northeastern soybean producing areas. Wuzhai black beans have high resistance to seven physiological races, including Soybean cyst nematode No.3 Sex. In this study, Hefeng 35, a main cultivar in Heilongjiang Province, was crossed with Wuzhai black bean. The resistance of F_2 and F_3 generations to Soybean Cyst Nematode 3 was studied. The effects of Wuzhai black bean on soybean cyst nematode Resistance inheritance. The results showed that in Hefeng35 genetic background, Wuzhai black beans resistant to SCN 3 race races consistent with Mendel's genetic rule in the ratio of 1: 3 separation ratio, indicating that Wuzhai black beans SCN 3 Physiological resistance is controlled by a pair of recessive genes.